Essays about: "mesh density"

Showing result 1 - 5 of 34 essays containing the words mesh density.

  1. 1. Trajectory Optimisation of a Spacecraft Swarm Maximising Gravitational Signal

    University essay from KTH/Optimeringslära och systemteori

    Author : Rasmus Maråk; [2023]
    Keywords : Spacecraft Swarms; Trajectory Optimisation; Impulsive Manoeuvres; Evolutionary Algorithms; Polyhedral Gravity Model; Small Body Exploration; Discrete Spherical Grids; Svärmande rymdfarkoster; Banoptimering; Impulsiva manövrar; Evolutionära Algoritmer; Polyhedral gravitationsmodell; Utforksning av små kroppar i solsystemet; Diskreta sfäriska rutnät;

    Abstract : Proper modelling of the gravitational fields of irregularly shaped asteroids and comets is an essential yet challenging part of any spacecraft visit and flyby to these bodies. Accurate density representations provide crucial information for proximity missions, which rely heavily on it to design safe and efficient trajectories. READ MORE

  3. 2. Evaluation of filter and extraction kits for eDNA-based quantification of Northern pike density

    University essay from SLU/Dept. Of Aquatic Resources

    Author : Ofir Svensson; [2021]
    Keywords : Blood and Tissue; Chelex 100; cellulose nitrate membrane filter; COI; extraction kit; filter; glass microfiber filter; pike; PowerWater; quantitative eDNA;

    Abstract : Multi-mesh gillnets are the most common gear in Swedish fish monitoring programs. The method works for many fish species but has limitations. READ MORE

  4. 3. Direct and indirect effects of roe deer (Capreolus capreolus) herbivory on an island population of Chequered blue butterfly (Scolitantides orion).

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Alexandra Johansson; [2021]
    Keywords : Scolitantides orion; Chequered blue butterfly; oviposition; oviposition behaviour; Indirect and direct effects; herbivory;

    Abstract : Herbivory by ungulates is a known agent of disturbance in many ecological systems around the globe. At high abundances and through a selective foraging behaviour herbivory may inflict significant direct and indirect effects on local plant and animal communities. READ MORE

  5. 4. 3D Scanner : Scanning small objects and recreating them visually as a mesh in a computer

    University essay from KTH/Mekatronik

    Author : Carl Egenäs; Axel Sacilotto; [2021]
    Keywords : Mechatronics; 3D Scanner; Arduino; Stepper Motor; Mesh; Mekatronik; 3D-Scanner; Arduino; Stegmotor; Mesh;

    Abstract : The purpose of this project was to construct a 3D scanner capable of scanning smaller objects and visualize them in a computer with satisfying accuracy. The goal was then to generate an STL file able to be 3D printed in an attempt at reverse engineering. READ MORE

  6. 5. Simplification of CAD Geometries to perform CEM Simulations

    University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Author : Farrukh Bashir; [2021]
    Keywords : Defeaturing; Modification; Blending Features; FEA; CEM; CAD; CAE.;

    Abstract : The purpose of this study is to investigate small features in CAD geometries which have high influence on computational time and memory consumption during electromagnetic simulations using CAE software. Computational Electromagnetics (CEM) simulations of complex CAD geometries like passenger cars crash often simulations remain incomplete due to a lot of irrelevant details. READ MORE